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Synthesis and Enantiodifferentiation of Isomeric 2,3,5,6,8,8a-Hexahydro-2,5,5,8a-tetramethyl-7H-1-benzopyran-7-ones (3,4-Dihydro-3-oxoedulans)

✍ Scribed by Schmidt, Gertraut; Neugebauer, Wolfgang; Winterhalter, Peter; Schreier, Peter


Book ID
126094064
Publisher
American Chemical Society
Year
1995
Tongue
English
Weight
593 KB
Volume
43
Category
Article
ISSN
0021-8561

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Synthesis of 2,3,4,6,7,8-Hexahydro-5H-1-
✍ Hermann Hombrecher; Paul Margaretha; Paul Tissot πŸ“‚ Article πŸ“… 1986 πŸ› John Wiley and Sons 🌐 German βš– 218 KB πŸ‘ 1 views

I211 Genbve 4 (5. V .86) ~ Comparative results on the reduction of 4,6,7,8-tetrahydro-7,7-dimethyl-2H-1 -benzopyran-2,5(3H)-diones 1 are reported. Hydride reduction (LiAIH, in EtzO or NaBH, in i-PrOH) affords 2,3,4,6,7,8-hexahydro-5H-l-benzopyran-5-ones 5 in 30-60 % isolated yield. Photochemical red